16:10 could still have been okay for landscape but the issue with new Android tablets with ICS/JB is you don't get access to the full 16:10 resolution because of the status and navigation bars.

Dunno about the generics but on the FireHD8.9 I have no problem reading comics, ebooks, or magazines in fullscreen mode with no bars. Most reading/viewing apps have a barless setting and a touch protocol to call up the controls when needed. Bluefire, Overdrive, Coolreader, the various PDF viewers... they all let me use every last pixel of screen for content and only content.